Heterometallic hafnocene(+4) aluminum hydride complex [(ηp5-C5H5)2Hf(H)(μ2-H)Al(H)Br(μ2-OC4H9)]2
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Abstract
The [Cp2HfH2Al(H)Br(OBu)]2 complex (1) was prepared by the reaction of Cp2HfBr2 with AlH3 in THF and characterized by X-ray crystallography. The formation of dinuclear complex 1 proceeds through the intermediate formation (as a result of cleavage of THF molecules) of the >Al(μ-OBu)2Al< fragment. The latter is linked to two hafnocene dihydride molecules by the Hf-H-Al hydrogen bridges. The Hf atom in complex 1 has a 16-electron environment.
Key words
hafnocene aluminum hydride crystal structurePreview
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